Difference between revisions of "Gabor Modules"

Revision as of 21:31, 2 March 2008

This reference is completely valid from FTM & Co 2.3.2.

gbr.addenv

Additive synthesis: generate partials with a given envelope

Adds partials with a spectral envolope (given as a vector or list) to an incoming spectrum using the FFT-1 technique.The output is typically connected to gbr.ifft (in real mode) or another gbr.addenv or gbr.addpartials module.

arguments:	1 <num: max> - maximum number of partials [64]
attributes:	noisy <bool: switch> - enable/disbale noisiness ['off'] coefs <num: coefs> - set number of FFT-1 spectral bin coefficients [8]
messages:	noisy <bool: switch> - enable/disbale noisiness ['off'] coefs <num: coefs> - set number of FFT-1 spectral bin coefficients [8]
inlets:	1 <fmat: spectrum> - complex vector (only positive frequencies) to which to add the generated partials 2 <num\|fmat\|fvec\|list: freq(s)> - fundamental frequency (num: for harmonics) or vector of partials frequencies 3 <num\|fmat\|fvec\|list: spectral envelope> - spectral envelope (given values will be linearly interpolated) 4 <num\|fmat\|fvec\|list: phase(s)> - phase (num: for all partials) or vector of phases for the given partials
outlets:	1 <fmat> - no description

gbr.addpartials

Additive synthesis: generate partials with given frequencies and amplitudes

Adds partials (given as a vector or list) to an incoming spectrum using the FFT-1 technique.The output is typically connected to gbr.ifft (in real mode) or another gbr.addpartials or gbr.addenv module.
Frequencies and amplitudes can be given by separated vectors with separated inputs (input format 'vec') or as a single matrix to the first inlet.The input format (attribute @format) determines the interpretation of the columns of the incoming matrix: 'fa' requires 2 columns with frequencies and amplitudes, 'ifa' requires 3 columns with partial indices, frequencies and amplitudes.

arguments:	1 <num: max> - maximum number of partials [64]
attributes:	format <'vec'\|'fa'\|'ifa': format> - set input matrix/vector format ['vec'] noisy <bool: switch> - enable/disbale noisiness ['off'] coefs <num: num> - set number of FFT-1 spectral bin coefficients [8]
messages:	format <'vec'\|'fa'\|'ifa': format> - set input matrix/vector format ['vec'] noisy <bool: switch> - enable/disbale noisiness ['off'] coefs <num: num> - set number of FFT-1 spectral bin coefficients [8]
inlets:	1 <fmat: spectrum> - complex vector (only positive frequencies) to which to add the generated partials 2 <num\|fmat\|fvec\|list: freq(s)> - set fundamental frequency (num: for harmonics) or vector of partials frequencies 3 <num\|fmat\|fvec\|list: amp(s)> - set amplitude (num: for harmonics) or vector of partials amplitudes 4 <num\|fmat\|fvec\|list: phase(s)> - set phase (num: for all partials) or vector of phases for the given partials
outlets:	1 <fmat> - no description

gbr.autox

Auto correlation and similar

Calculates autocorrelation, distance, quadratic distance, sum magnitude difference function and accumulated difference function (yin).

arguments:	1 <num: size> - calculation size [256] 2 <num: width> - window width [256]
attributes:	out <fmat: output> - set output vector mode <'corr'\|'dist'\|'dist2'\|'smdf'\|'yin': mode> - set calculation mode ['corr'] scale <num: factor> - set scaling factor [1]
messages:	size <num: size> - set calculation size (maximum output size) width <num: width> - set window width out <fmat: output> - set output vector scale <num: factor> - set scaling factor [1]
inlets:	1 <fmat\|fvec: vector> - input vector
outlets:	1 <fmat: vector> - auto correlation vector

gbr.bands

Calulate frequency bands (or integrate bands of a similar domain)

Sums regions of the incoming vector to bands in different schemes:sum of values between given bounds or classical HTK or FC mel coefficients.Its input is typically connected to gbr.fft (in real mode).

arguments:	[<num: boundaries> ...] \| <num: input size> <num: output size> - input spectrum size and output bands number, or boundaries
attributes:	out <fmat: output> - set output vector integ <'sqrabs'\|'abs': type> - set spectrum integration type (amplitude or power spectrum) ['sqrabs'] scale <num: factor> - set bands filter scale [1] maxfreq <num: max freq> - set output maximum frequency [sr /2] minfreq <num: min freq> - set output minimum frequency [0] mode <'bounds'\|'mel'\|'htkmel'\|'fcmel': mode> - set bands mode ['bounds'] down <num: factor> - down sampling factor of incoming frames (overwrites domain) [1] domain <num: domain> - set domain of incoming vector (<= 0 sets to sr/2) [input size]
messages:	getstate - get the internal weights matrix bounds [<num: bounaries> ...] - set band boundaries outsize <num: output size> - set number of output bands insize <num: input size> - set input spectrum size out <fmat: output> - set output vector integ <'sqrabs'\|'abs': type> - set spectrum integration type (amplitude or power spectrum) ['sqrabs'] scale <num: factor> - set bands filter scale [1] maxfreq <num: max freq> - set output maximum frequency [sr /2] minfreq <num: min freq> - set output minimum frequency [0] mode <'bounds'\|'mel'\|'htkmel'\|'fcmel': mode> - set bands mode ['bounds'] down <num: factor> - down sampling factor of incoming frames (overwrites domain) [1] domain <num: domain> - set domain of incoming vector (<= 0 sets to sr/2) [input size]
inlets:	1 <fmat\|fvec: spectrum>: - vector of values (amplitude or power spectrum)
outlets:	1 <fmat: ceofficients> - vector of output coefficients 2 <fmat: weights> - internal weights matrix

gbr.bq

Constant Q

Calculates a constant Q transform on an incoming spectrum [J.Brown, M.Puckette 1992].Its input is typically connected to gbr.fft (in real mode).

arguments:	<num: FFT size> <num: min freq> <num: channels per octave> <num: threshold> <num: number of channels> - filter kernel parameters
attributes:	channels <num: channels> - set number of channels to calculate [all]
messages:	channels <num: channels> - set number of channels to calculate [all]
inlets:	1 <fmat: spectrum> - complex vector of (positive frequencies)
outlets:	1 <fmat: coefficients> - filter bands

gbr.copy

Copy vector (fmat) out of a delay line or an fmat or fvec)

Copies a grain (fmat vector) of a given duration out of a delay line at a given delay time and outputs an fmat reference.If the given delay time is less than the the duration the vector will be shortened

arguments:	1 <delayline\|fmat\|fvec: source> - source reference 2 <num: duration> - grain duration [100]
attributes:	out <fmat: output> - set output vector unit <'msec'\|'sec'\|'samp': unit> - set time unit to msecs, secs or samples ['msec']
messages:	bang - copy vector from the beginning of the delay line and output set <delayline\|fmat\|fvec: source> - set source out <fmat: output> - set output vector unit <'msec'\|'sec'\|'samp': unit> - set time unit to msecs, secs or samples ['msec']
inlets:	1 <num: delay> - copy and output grain at given delay position 2 <num: duration> - set duration
outlets:	1 <fmat: vector> - copied grain

gbr.crossx

Cross correlation and similar

Calculates correlation, distance, quadratic distance and sum magnitude difference function.

arguments:	1 <num: size> - calculation size [256] 2 <num: width> - window width [256] 3 <fmat\|fvec: vector> - right operand
attributes:	out <fmat: output> - set output vector mode <'corr'\|'dist'\|'dist2'\|'smdf': mode> - set calculation mode scale <num: factor> - set scaling factor [1]
messages:	width <num: width> - set window width size <num: size> - set calculation size (maximum output size) out <fmat: output> - set output vector scale <num: factor> - set scaling factor [1]
inlets:	1 <fmat\|fvec: vector> - left input vector 2 <fmat\|fvec: vector> - right input vector
outlets:	1 <fmat: vector> - cross correlation vector

gbr.dct

Discrete cosine transform

Calculates a DCT of the incoming vector.

arguments:	1 <num: input size> - size of input vector [40] 2 <num: output size> - number of DCT coefficients to be calculated [13]
attributes:	out <fmat: output> - set output vector mode <'slaney'\|'htk'\|fc'> - set discrete cosine transform mode ['slaney']
messages:	getstate - get the internal weights matrix outsize <num: output size> - set number of DCT coefficients to be calculated insize <num: input size> - set size input vector out <fmat: output> - set output vector mode <'slaney'\|'htk'\|fc'> - set discrete cosine transform mode ['slaney']
inlets:	1 <fmat\|fvec: vector> - input vector
outlets:	1 <fmat: vector> - DCT coefficients 2 <fmat: vector> - internal weights matrix

gbr.dline~

Classical delay line

Delay line to be used with gbr.copy and gbr.tapout~.

arguments:	<sym: name> <num: size in given unit> - give name and size [none 100]
attributes:	unit <'msec'\|'sec'\|'samp': unit> - set time unit to msecs, secs or samples ['msec'] scope <'local'\|'global'> - set delayline name scope ['global']
messages:	freeze <'0'\|'1': freeze>] - enable/disable delay line freeze clear - zero delay line
inlets:	1 - write signal into delay line
outlets:	1 - thru output (for order-forcing)

gbr.drain~

Forward delay line

Delay line to write with different delays to be used with gbr.paste and gbr.tapin~.

arguments:	<sym: name> <num: size in given unit> - give name and size [none 100]
attributes:	unit <'msec'\|'sec'\|'samp': unit> - set time unit to msecs, secs or samples ['msec'] scope <'local'\|'global'> - set delayline name scope ['global']
messages:	clear - clear delay line
inlets:	1 - (order-forcing input)
outlets:	1 - sum delay line output

gbr.fft

Fast Fourier transform

Calculates FFT on incoming vector.

arguments:	1 <num: size> - FFT size (rounded to the next power of 2) [512]
attributes:	out <fmat: output> - set output vector mode <'auto'\|'complex'\|'real': mode> - FFT mode ['auto'] scale <num: factor> - scaling factor (0 --> 1 / FFT size) [1]
messages:	out <fmat: output> - set output vector scale <num: factor> - scaling factor (0 --> 1 / FFT size) [1]
inlets:	1 <fmat\|fvec: vector> - real or conplex input vector
outlets:	1 <fmat: vector> - real or conplex output vector

gbr.fire~

Gabor timing impulse generator

Periodically outputs a given fmat or a bang within the Gabor scheduling scheme.

arguments:	<num: period> [<fmat: vector>] - frequency/period and fmat to fire [0]
attributes:	out <fmat: out> - set output fmat var <num: freq var> - set period variation (0...1) [0] period <num: period> - set frequency/period [0] unit <'hz'\|'msec'\|'sec'\|'samp'\|'midi'\|'midicent': unit> - set frequency/period unit to Hz, msec or samples ['hz']
messages:	out <fmat: out> - set output fmat var <num: freq var> - set period variation (0...1) [0] period <num: period> - set frequency/period [0] unit <'hz'\|'msec'\|'sec'\|'samp'\|'midi'\|'midicent': unit> - set frequency/period unit to Hz, msec or samples ['hz']
inlets:	1 <num: freq/period> - fire frequency/period (O is off) 2 <fmat: vector> - set fmat to fire
outlets:	1 - output fmat or bang

gbr.gen=

Generate waveform/function

Adds a given (and parametrised) waveform/function to an incomming vector.The user can chose among various waveforms/functions

arguments:	<'cosine'\|'sine': function> [<any: parameters> ...] - generator function and parameters ['cosine']
attributes:	none
messages:	set <'cosine'\|'sine': function> [<any: parameters> ...] - set generator function and parameters
inlets:	1 <fmat\|fvec: vector> - input vector to which the waveform/function will be added 2 [<any: parameters> ...] - set generator parameters
outlets:	1 <fmat\|fvec: vector> - output incoming vector with added waveform/function

gbr.harms

Estimate harmonics from a given spectrum (or any other vector)

Estimates frequencies (interpolated and scaled indices) and amplitudes of harmonics in an incoming vector.Harmonics are defined as peaks around the multiple of a given value (fundamental frequency) with a given tolerance.The estimation of harmonics in a spectrum works best when a logarthimic amplitude spectrum is provided as input.

arguments:	1 <num: max harms> - maximum number of harmonics to be estimated [16] 2 <num: freq> - fundamental frequency in Hz [10] 3 <num: factor> - allowed deviation factor from theoretic harmonic frequency (linear factor of f0) [1.0]
attributes:	down <num: down> - set down sampling factor of incoming frames (overwrites domain and scale) [1] scale <num: factor> - set scaling factor of harmonics (overwrites domain and down) domain <num: domain> - set domain of output peaks (<= 0 sets to sr/2) [sr/2]
messages:	width <num: freq> - set maximum width for harmonic peaks height <num: amp> - set minimum height for harmonic peaks interval <num: cent> - set allowed deviation factor from theoretic harmonic frequency (in cent) delta <num: factor> - set allowed deviation factor from theoretic harmonic frequency (linear factor of f0) freq <num: freq> - set fundamental frequency in Hz max <num: max harms> - set maximum number of harmonics to be estimated down <num: down> - set down sampling factor of incoming frames (overwrites domain and scale) [1] scale <num: factor> - set scaling factor of harmonics (overwrites domain and down) domain <num: domain> - set domain of output peaks (<= 0 sets to sr/2) [sr/2]
inlets:	1 <fmat\|fvec: vector> - input vector>
outlets:	1 <fmat: vector> - vector of harmonics

gbr.ifft

Inverse fast Fourier transform

Calculates inverse FFT on incoming vector.

arguments:	1 <num: size> - FFT size (rounded to the next power of 2) [512]
attributes:	out <fmat: output> - set output vector mode <'auto'\|'complex'\|'real': mode> - FFT mode ['auto'] scale <num: factor> - scaling factor (0 --> 1 / FFT size) [1]
messages:	out <fmat: output> - set output vector scale <num: factor> - scaling factor (0 --> 1 / FFT size) [1]
inlets:	1 - messages only
outlets:	1 <fmat> - no description

gbr.lifter

(to be documented)

(to be documented)

arguments:	1 <num: size> - size of input vector [13] 2 <num: factor> - filtering factor [0]
attributes:	out <fmat: output> - set output vector mode <'exp'\|'sin': mode> - set liftering type: exponential (Auditory Toolbox-like) or sinusoidal (HTK-like) ['exp'] inv <'0'\|'1': switch> - enable/disable the inverse liftering mode [0]
messages:	getstate - get internal weights matrix factor <num: factor> - set filtering factor insize <num: size> - size of input vector out <fmat: output> - set output vector mode <'exp'\|'sin': mode> - set liftering type: exponential (Auditory Toolbox-like) or sinusoidal (HTK-like) ['exp'] inv <'0'\|'1': switch> - enable/disable the inverse liftering mode [0]
inlets:	1 <fmat\|fvec: vector> - cepstrum vector
outlets:	1 <fmat: vector> - liftered cepstrum 2 <fmat: weights> - internal weights matrix

gbr.lpc

Linear prediction coefficients

Calculates LPC coefficients from incoming sinal frame.

arguments:	1 <num: order> - LPC order [12]
attributes:	out <fmat: output> - set output vector errasfloat <'0'\|'1': switch> - enable/disable float number output [0]
messages:	order <num: order> - set LPC order out <fmat: output> - set output vector errasfloat <'0'\|'1': switch> - enable/disable float number output [0]
inlets:	1 <fmat\|fvec: vector> - input vector
outlets:	1 <fmat: vector> - LPC coefficients 2 <num\|fmat: error> - prediciton error 3 <fmat: vector> - autocorrelation 4 <fmat: vector> - internal values

gbr.mask

Partial masking using critical band width

Calculates and applies masking to incoming vector of partials.The input format (attribute @format) determines the interpretation of the columns of the incoming matrix: 'fa' requires 2 columns with frequencies and amplitudes, 'ifa' requires 3 columns with partial indices, frequencies and amplitudes.

arguments:	none
attributes:	out <fmat: output> - set output vector format - 'fa'\|'ifa': input format> - set input matrix format ['fa']
messages:	calcpeaks <num: (left) peaks> [<num: right peaks>] - set number of peaks on the left and right to be taken into account in calculation slope <num: slope> [<num: slope>] - set (left and right) masking slope out <fmat: output> - set output vector format - 'fa'\|'ifa': input format> - set input matrix format ['fa']
inlets:	1 <fmat: partials> - vector of partials (in given format)
outlets:	1 <fmat: partials> - vector of partials (in given format)

gbr.morph

(to be documented)

(to be documented)

arguments:	1 <fmat: partials> - vector of paritals corresponding to the interpolation factor 0 2 <fmat: partials> - vector of paritals corresponding to the interpolation factor 1
attributes:	out <fmat: output> - set output vector format - 'fa'\|'ifa'\|'plain': input format> - set input matrix format ['fa']
messages:	out <fmat: output> - set output vector format - 'fa'\|'ifa'\|'plain': input format> - set input matrix format ['fa']
inlets:	1 <num: factor> - morphing factor (0...1) 2 <fmat: partials> - vector of paritals corresponding to the interpolation factor 0 3 <fmat: partials> - vector of paritals corresponding to the interpolation factor 1
outlets:	1 <fmat: partials> - vector of morphed paritals

gbr.ola~

Overlap-add

Performs the overlap-add of incoming vectors into a forward delayline.The vector will be shortened at the end of the delayline.

arguments:	1 <num: channels> - number of output channels [1] 2 <num: size> - buffer size [100] 3 <num: delay> - delay position [0] 4 <num: channel> - output channel (0 switches off) [1]
attributes:	unit <'msec'\|'sec'\|'samp': unit> - set time unit to msecs, secs or samples ['msec'] interp <bool: switch> - enable/disable interpolation ['off']
messages:	interp <bool: switch> - enable/disable interpolation ['off'] clear - clear delay line
inlets:	1 <fmat\|fvec: vector> - overlap-add vector at given delay position 2 <num: delay> - set delay 3 <num: channel> - set output channel (0 switches off)
outlets:	1 - sum delay line output

gbr.paste

Paste a grain (fmat or fvec) into a drain

Copies a vector into a drain with a given delay.The vector will be shortened at the end of the drain.

arguments:	1 <delayline\|fmat\|fvec: destination> - destination (write delay line or fmat) 2 <num: delay> - delay position [0]
attributes:	unit <'msec'\|'sec'\|'samp': unit> - set time unit to msecs, secs or samples ['msec'] interp <bool: switch> - enable/disable interpolation ['off']
messages:	set <delayline\|fmat\|fvec: destination> - set destination (write delay line, fmat or fvec) unit <'msec'\|'sec'\|'samp': unit> - set time unit to msecs, secs or samples ['msec'] interp <bool: switch> - enable/disable interpolation ['off']
inlets:	1 <fmat\|fvec: vector> - paste vector at given delay position 2 - set delay position
outlets:	none

gbr.peaks

Estimate peaks (partials) from a given spectrum (or any other vector)

Estimates frequencies (interpolated and scaled indices) and amplitudes of peaks in an incoming vector.The estimation of partials in a spectrum works best when a logarthimic amplitude spectrum (positive frequencies) is provided as input.

arguments:	1 <num: max peaks> - maximum number of peaks to be estimated [16]
attributes:	range <min: boundary> <max: boundary> - band where to search for peaks keep <'lowest'\|'strongest': mode> - keep first or strongest peaks ['lowest'] down <num: down> - set down sampling factor of incoming frames (overwrites domain and scale) [1] scale <num: factor> - set scaling factor of output peaks (overwrites domain and down) domain <num: domain> - set domain of output peaks (<= 0 sets to sr/2) [sr/2]
messages:	dev <num: value> - set maximum deviation from mean value width <num: freq> - set maximum width for peaks (indicates sinusoïdality) height <num: amp> - set minimum height for peaks max <num: max peaks> - set maximum number of peaks to be estimated range <min: boundary> <max: boundary> - band where to search for peaks keep <'lowest'\|'strongest': mode> - keep first or strongest peaks ['lowest'] down <num: down> - set down sampling factor of incoming frames (overwrites domain and scale) [1] scale <num: factor> - set scaling factor of output peaks (overwrites domain and down) domain <num: domain> - set domain of output peaks (<= 0 sets to sr/2) [sr/2]
inlets:	1 <fmat\|fvec: vector> - input vector (spectrum)>
outlets:	1 <fmat: vector> - vector of peaks

gbr.preemphasis

(to be documented)

(to be documented)

arguments:	1 <num: factor> - filtering factor [0]
attributes:	out - set output object
messages:	clear - clear any previous sample getstate - get the previous sample factor <num: factor> - set filtering factor out - set output object
inlets:	1 <fmat\|fvec: vector> - input signal
outlets:	1 <fmat: vector> - output preemphasised frame 2 <fmat: vector> - previous frame

gbr.psy~

Pysch synchronous (YIN-based) signal slicing

Cuts incoming signal into elementary waveforms.Outputs vectors corresponding to two periods of the estimated frequency or fixed duration (256 points) when unvoiced.

arguments:	none
attributes:	threshold <num: pitch> [<num: noise>] - set pitch and noise quality treshold [0.6838 0.4523] enable <bool: switch> - enable/disable calculation and output ['on']
messages:	threshold <num: pitch> [<num: noise>] - set pitch and noise quality treshold [0.6838 0.4523] enable <bool: switch> - enable/disable calculation and output ['on']
inlets:	1 - input signal to be analysed and cut into elemetary waveforms
outlets:	1 <fmat: vector> - elementary waveforms (2 periods) 2 <num: freq> - estimated frequency in Hz (0, when unvoiced) 3 <num: periodicity> - yin periodicity/quality factor 4 <num: factor> (linear) energy

gbr.resample

Resampling

Resamples incoming vector in different modes:'cubic' (cubic interpolation), 'downmean' (downsampling by calculating the mean of a given number of values), 'downremove' (picks nearest value)

arguments:	1 <num: order> - resampling order/increment [1]
attributes:	out <fmat: output> - set output vector mode <'cubic'\|'downmean'\|'downremove': mode> - set resampling mode
messages:	out <fmat: output> - set output vector mode <'cubic'\|'downmean'\|'downremove': mode> - set resampling mode
inlets:	1 <fmat: vector> - input vector 2 <num: order> - set resampling order/increment
outlets:	1 <fmat: vector> - output vector

gbr.slice~

Signal slicing

Cuts incoming signal into frames of given size with given period (hop size).

arguments:	1 <num: size> - frame size [512] 2 <num: size> - hop size [256]
attributes:	unit <'samp'\|'msec'\|'sec': unit> - set time unit to msecs, secs or samples ['samp'] enable <bool: switch> - enable/disable calculation and output ['on'] period <num: size> - set hop size size <num: size> - set frame size
messages:	unit <'samp'\|'msec'\|'sec': unit> - set time unit to msecs, secs or samples ['samp'] enable <bool: switch> - enable/disable calculation and output ['on'] period <num: size> - set hop size size <num: size> - set frame size
inlets:	1 - input signal to be sliced into frames
outlets:	1 <fmat: vector> - signal frames 2 <undefined> - no description

gbr.tapin~

Input tap for write delay line

Simple input tap for write delay line defined by gbr.dline~.

arguments:	1 <delayline: write> - delay line (defined by gbr.drain~) 2 <num: delay> - delay time (in given unit) [0]
attributes:	unit <'msec'\|'sec'\|'samp': unit> - set delay unit to msecs, secs or samples ['msec']
messages:	set <delayline: write> - set delay line (defined by gbr.drain~) unit <'msec'\|'sec'\|'samp': unit> - set delay unit to msecs, secs or samples ['msec']
inlets:	1 - input signal written to delay line 2 - set delay time
outlets:	1 - zero output (for order-forcing)

gbr.tapout~

Output tap for read delay line

Simple output tap for read delay line defined by gbr.drain~.

arguments:	1 <delayline: read> - delay line (defined by gbr.dline~) 2 - delay time (in given unit) [0]
attributes:	unit <'msec'\|'sec'\|'samp': unit> - set delay unit to msecs, secs or samples ['msec'] interp - 0\|1\|'off'\|'on\|'cubic'\|'linear': mode> - interpolation mode ['off']
messages:	set <delayline: read> - set delay line (defined by gbr.dline~) unit <'msec'\|'sec'\|'samp': unit> - set delay unit to msecs, secs or samples ['msec'] interp - 0\|1\|'off'\|'on\|'cubic'\|'linear': mode> - interpolation mode ['off']
inlets:	1 - (order-forcing input) 2 <sig\|num: delay> - delay time
outlets:	1 - delayed signal

gbr.timer~

Gabor timer

stop watch in Gabor scheduling scheme

arguments:	none
attributes:	unit <'msec'\|'sec'\|'samp'\|'hz'\|: unit> - set timer unit to msecs, secs, samples or Hz ['msec']
messages:	bang - report time since last bang unit <'msec'\|'sec'\|'samp'\|'hz'\|: unit> - set timer unit to msecs, secs, samples or Hz ['msec']
inlets:	1 - messages only
outlets:	1 <num: time> - time in given unit

gbr.trace

(to be documented)

(to be documented)

arguments:	1 <num: max> - maximum number of peaks [200]
attributes:	maxpasses - (to be documented) absamp - (to be documented) absfreq - (to be documented) relfreq - (to be documented) max <num: maximum number of partials [200]>
messages:	clear - (to be documented) maxpasses - (to be documented) absamp - (to be documented) absfreq - (to be documented) relfreq - (to be documented) max <num: maximum number of partials [200]>
inlets:	1 <fmat: partials> - vector of partials
outlets:	1 <fmat: partials> - vector of traced partials (with index)

gbr.wind=

Apply a window to an incoming frame, grain or wave

Applies a chosen (and parametrized) window to the incomming fmat (column by column).The user can chose among various window types (see help patch).

arguments:	<sym: function> [<any: parameters> ...] - window function and parameters ['hann']
attributes:	none
messages:	set <sym: function> [<any: parameters> ...] - set window function and parameters
inlets:	1 <fmat\|fvec: vector> - input vector to be windowed 2 [<any: parameters> ...] - set window parameters
outlets:	1 <fmat\|fvec: vector> - output incoming vector with applied window

gbr.yin

Fundamentatal frequency estimation after de Cheveigné and Kawahara

Estimates fundamental frequency and outputs energy, periodicity factor, and auto correlation coefficients.

arguments:	1 <num: min freq> - lowest estimated frequency in Hz [50.] 2 - quality/periodicity threshold [0.68]
attributes:	down <num: factor> - down sampling factor of incoming frames [1] threshold <num: threshold> - quality/periodicity threshold minfreq <num: min freq> - lowest estimated frequency in Hz
messages:	down <num: factor> - down sampling factor of incoming frames [1] threshold <num: threshold> - quality/periodicity threshold minfreq <num: min freq> - lowest estimated frequency in Hz
inlets:	1 - signal frame (fmat or fvec
outlets:	1 <num: freq> - estimated frequency in Hz 2 <num: energy> - energy factor 3 <num: perodicity> - quality/periodicity factor 4 <num: ac1> - 2nd autocorrelation coefficient (ac1) 5 <fmat: acf> - vector of autocorrelation coefficients

@@ Line 3: / Line 3: @@
 {{Module |
    | name=gbr.addenv
-   | brief=additive synthesis: generate partials with a given envelope
+   | brief=Additive synthesis: generate partials with a given envelope
    | descr=Adds partials with a spectral envolope (given as a vector or list) to an incoming spectrum using the FFT-1 technique.The output is typically connected to gbr.ifft (in real mode) or another gbr.addenv or gbr.addpartials module.
    | arguments=1 <num: max> - maximum number of partials [64]<br>
@@ Line 14: / Line 14: @@
 {{Module |
    | name=gbr.addpartials
-   | brief=additive synthesis: generate partials with given frequencies and amplitudes
+   | brief=Additive synthesis: generate partials with given frequencies and amplitudes
    | descr=Adds partials (given as a vector or list) to an incoming spectrum using the FFT-1 technique.The output is typically connected to gbr.ifft (in real mode) or another gbr.addpartials or gbr.addenv module.<br>Frequencies and amplitudes can be given by separated vectors with separated inputs (input format 'vec') or as a single matrix to the first inlet.The input format (attribute @format) determines the interpretation of the columns of the incoming matrix: 'fa' requires 2 columns with frequencies and amplitudes, 'ifa' requires 3 columns with partial indices, frequencies and amplitudes.
    | arguments=1 <num: max> - maximum number of partials [64]<br>
@@ Line 25: / Line 25: @@
 {{Module |
    | name=gbr.autox
-   | brief=auto correlation and similar
+   | brief=Auto correlation and similar
    | descr=Calculates autocorrelation, distance, quadratic distance, sum magnitude difference function and accumulated difference function (yin).
    | arguments=1 <num: size> - calculation size [256]<br>2 <num: width> - window width [256]<br>
@@ Line 36: / Line 36: @@
 {{Module |
    | name=gbr.bands
-   | brief=calulate frequency bands (or integrate bands of a similar domain)
+   | brief=Calulate frequency bands (or integrate bands of a similar domain)
    | descr=Sums regions of the incoming vector to bands in different schemes:sum of values between given bounds or classical HTK or FC mel coefficients.Its input is typically connected to gbr.fft (in real mode).
    | arguments=[<num: boundaries> ...] &#124; <num: input size> <num: output size> - input spectrum size and output bands number, or boundaries<br>
@@ Line 47: / Line 47: @@
 {{Module |
    | name=gbr.bq
-   | brief=constant Q
+   | brief=Constant Q
    | descr=Calculates a constant Q transform on an incoming spectrum [J.Brown, M.Puckette 1992].Its input is typically connected to gbr.fft (in real mode).
    | arguments=<num: FFT size> <num: min freq> <num: channels per octave> <num: threshold> <num: number of channels> - filter kernel parameters<br>
@@ Line 58: / Line 58: @@
 {{Module |
    | name=gbr.copy
-   | brief=copy vector (fmat) out of a delay line or an fmat or fvec)
+   | brief=Copy vector (fmat) out of a delay line or an fmat or fvec)
    | descr=Copies a grain (fmat vector) of a given duration out of a delay line at a given delay time and outputs an fmat reference.If the given delay time is less than the the duration the vector will be shortened
    | arguments=1 <delayline&#124;fmat&#124;fvec: source> - source reference<br>2 <num: duration> - grain duration [100]<br>
@@ Line 69: / Line 69: @@
 {{Module |
    | name=gbr.crossx
-   | brief=cross correlation and similar
+   | brief=Cross correlation and similar
    | descr=Calculates correlation, distance, quadratic distance and sum magnitude difference function.
    | arguments=1 <num: size> - calculation size [256]<br>2 <num: width> - window width [256]<br>3 <fmat&#124;fvec: vector> - right operand<br>
@@ Line 80: / Line 80: @@
 {{Module |
    | name=gbr.dct
-   | brief=discrete cosine transform
+   | brief=Discrete cosine transform
    | descr=Calculates a DCT of the incoming vector.
    | arguments=1 <num: input size> - size of input vector [40]<br>2 <num: output size> - number of DCT coefficients to be calculated [13]<br>
@@ Line 91: / Line 91: @@
 {{Module |
    | name=gbr.dline~
-   | brief=classical delay line
+   | brief=Classical delay line
    | descr=Delay line to be used with gbr.copy and gbr.tapout~.
    | arguments=<sym: name> <num: size in given unit> - give name and size [none 100]<br>
@@ Line 102: / Line 102: @@
 {{Module |
    | name=gbr.drain~
-   | brief=forward delay line
+   | brief=Forward delay line
    | descr=Delay line to write with different delays to be used with gbr.paste and gbr.tapin~.
    | arguments=<sym: name> <num: size in given unit> - give name and size [none 100]<br>
@@ Line 113: / Line 113: @@
 {{Module |
    | name=gbr.fft
-   | brief=fast Fourier transform
+   | brief=Fast Fourier transform
    | descr=Calculates FFT on incoming vector.
    | arguments=1 <num: size> - FFT size (rounded to the next power of 2) [512]<br>
@@ Line 135: / Line 135: @@
 {{Module |
    | name=gbr.gen=
-   | brief=generate waveform/function
+   | brief=Generate waveform/function
    | descr=Adds a given (and parametrised) waveform/function to an incomming vector.The user can chose among various waveforms/functions
    | arguments=<&#039;cosine&#039;&#124;&#039;sine&#039;: function> [<any: parameters> ...] - generator function and parameters [&#039;cosine&#039;]<br>
@@ Line 146: / Line 146: @@
 {{Module |
    | name=gbr.harms
-   | brief=estimate harmonics from a given spectrum (or any other vector)
+   | brief=Estimate harmonics from a given spectrum (or any other vector)
    | descr=Estimates frequencies (interpolated and scaled indices) and amplitudes of harmonics in an incoming vector.Harmonics are defined as peaks around the multiple of a given value (fundamental frequency) with a given tolerance.The estimation of harmonics in a spectrum works best when a logarthimic amplitude spectrum is provided as input.
    | arguments=1 <num: max harms> - maximum number of harmonics to be estimated [16]<br>2 <num: freq> - fundamental frequency in Hz [10]<br>3 <num: factor> - allowed deviation factor from theoretic harmonic frequency (linear factor of f0) [1.0]<br>
@@ Line 157: / Line 157: @@
 {{Module |
    | name=gbr.ifft
-   | brief=inverse fast Fourier transform
+   | brief=Inverse fast Fourier transform
    | descr=Calculates inverse FFT on incoming vector.
    | arguments=1 <num: size> - FFT size (rounded to the next power of 2) [512]<br>
@@ Line 179: / Line 179: @@
 {{Module |
    | name=gbr.lpc
-   | brief=linear prediction coefficients
+   | brief=Linear prediction coefficients
    | descr=Calculates LPC coefficients from incoming sinal frame.
    | arguments=1 <num: order> - LPC order [12]<br>
@@ Line 190: / Line 190: @@
 {{Module |
    | name=gbr.mask
-   | brief=partial masking using critical band width
+   | brief=Partial masking using critical band width
    | descr=Calculates and applies masking to incoming vector of partials.The input format (attribute @format) determines the interpretation of the columns of the incoming matrix: 'fa' requires 2 columns with frequencies and amplitudes, 'ifa' requires 3 columns with partial indices, frequencies and amplitudes.
    | arguments=none
@@ Line 212: / Line 212: @@
 {{Module |
    | name=gbr.ola~
-   | brief=overlap-add
+   | brief=Overlap-add
    | descr=Performs the overlap-add of incoming vectors into a forward delayline.The vector will be shortened at the end of the delayline.
    | arguments=1 <num: channels> - number of output channels [1]<br>2 <num: size> - buffer size [100]<br>3 <num: delay> - delay position [0]<br>4 <num: channel> - output channel (0 switches off) [1]<br>
@@ Line 223: / Line 223: @@
 {{Module |
    | name=gbr.paste
-   | brief=paste a grain (fmat or fvec) into a drain
+   | brief=Paste a grain (fmat or fvec) into a drain
    | descr=Copies a vector into a drain with a given delay.The vector will be shortened at the end of the drain.
    | arguments=1 <delayline&#124;fmat&#124;fvec: destination> - destination (write delay line or fmat)<br>2 <num: delay> - delay position [0]<br>
@@ Line 234: / Line 234: @@
 {{Module |
    | name=gbr.peaks
-   | brief=estimate peaks (partials) from a given spectrum (or any other vector)
+   | brief=Estimate peaks (partials) from a given spectrum (or any other vector)
    | descr=Estimates frequencies (interpolated and scaled indices) and amplitudes of peaks in an incoming vector.The estimation of partials in a spectrum works best when a logarthimic amplitude spectrum (positive frequencies) is provided as input.
    | arguments=1 <num: max peaks> - maximum number of peaks to be estimated [16]<br>
@@ Line 256: / Line 256: @@
 {{Module |
    | name=gbr.psy~
-   | brief=pysch synchronous (YIN-based) signal slicing
+   | brief=Pysch synchronous (YIN-based) signal slicing
    | descr=Cuts incoming signal into elementary waveforms.Outputs vectors corresponding to two periods of the estimated frequency or fixed duration (256 points) when unvoiced.
    | arguments=none
@@ Line 267: / Line 267: @@
 {{Module |
    | name=gbr.resample
-   | brief=resampling
+   | brief=Resampling
    | descr=Resamples incoming vector in different modes:'cubic' (cubic interpolation), 'downmean' (downsampling by calculating the mean of a given number of values), 'downremove' (picks nearest value)
    | arguments=1 <num: order> - resampling order/increment [1]<br>
@@ Line 278: / Line 278: @@
 {{Module |
    | name=gbr.slice~
-   | brief=signal slicing
+   | brief=Signal slicing
    | descr=Cuts incoming signal into frames of given size with given period (hop size).
    | arguments=1 <num: size> - frame size [512]<br>2 <num: size> - hop size [256]<br>
@@ Line 289: / Line 289: @@
 {{Module |
    | name=gbr.tapin~
-   | brief=input tap for write delay line
+   | brief=Input tap for write delay line
    | descr=Simple input tap for write delay line defined by gbr.dline~.
    | arguments=1 <delayline: write> - delay line (defined by gbr.drain~)<br>2 <num: delay> - delay time (in given unit) [0]<br>
@@ Line 300: / Line 300: @@
 {{Module |
    | name=gbr.tapout~
-   | brief=output tap for read delay line
+   | brief=Output tap for read delay line
    | descr=Simple output tap for read delay line defined by gbr.drain~.
    | arguments=1 <delayline: read> - delay line (defined by gbr.dline~)<br>2 - delay time (in given unit) [0]<br>
@@ Line 311: / Line 311: @@
 {{Module |
    | name=gbr.timer~
-   | brief=gabor timer
+   | brief=Gabor timer
    | descr=stop watch in Gabor scheduling scheme
    | arguments=none
@@ Line 333: / Line 333: @@
 {{Module |
    | name=gbr.wind=
-   | brief=apply a window to an incoming frame, grain or wave
+   | brief=Apply a window to an incoming frame, grain or wave
    | descr=Applies a chosen (and parametrized) window to the incomming fmat (column by column).The user can chose among various window types (see help patch).
    | arguments=<sym: function> [<any: parameters> ...] - window function and parameters [&#039;hann&#039;]<br>
@@ Line 344: / Line 344: @@
 {{Module |
    | name=gbr.yin
-   | brief=fundamentatal frequency estimation after de Cheveigné and Kawahara
+   | brief=Fundamentatal frequency estimation after de Cheveigné and Kawahara
    | descr=Estimates fundamental frequency and outputs energy, periodicity factor, and auto correlation coefficients.
    | arguments=1 <num: min freq> - lowest estimated frequency in Hz [50.]<br>2 - quality/periodicity threshold [0.68]<br>

Difference between revisions of "Gabor Modules"

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Revision as of 21:31, 2 March 2008

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